About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

Milula Studios
Window pictures

The window stickers from Milula Studios are a magical way to transform your windows into a winter wonderland. The self-adhesive snowflake window stickers create a magical atmosphere and give your rooms a festive touch. The high-quality materials guarantee lasting beauty and the easy application and residue-free removal make decorating stress-free. The variety of products also allows you to create individual designs for unique Advent windows.

Advantages

✅ Festive atmosphere
✅ self-adhesive
✅ residue-free removal

Disadvantages

❌ Not ideal for damp rooms
❌ Patience required for removal

The first impression

Packaging and contents

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingUnnecessary packaging waste was avoided, but plastic film was used90 points
Package contents and scope200 window pictures in 9 sheets100 points
Instructions for useCompact and easy-to-understand instructions available100 points
Total98 points
Weighting: 20%
*The maximum score is 100 points
Verpackung der Fensterbilder
Packaging of the window pictures

The product protection of the window pictures from Milula Studios was impressive, as the product arrived without scratches or soiling. The packaging showed a conscious avoidance of unnecessary packaging waste, although the use of plastic film was noticeable, which could be optimized in terms of sustainability. The contents of the pack were impressive with a generous 200 window pictures on 9 sheets, allowing for a wide variety of designs. A small set of instructions can be found on the back of the packaging. The product proved to be largely self-explanatory to use.
Product protection and environmentally friendly packaging characterize the first impression, while the generous package contents open up many design possibilities.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceVery good visual appearance100 points
ProcessingVery good workmanship100 points
StabilityVery stable100 points
Sustainability of the productNo information on sustainability, but residue-free removal possible80 points
Total95 points
Weighting: 20%
*The maximum score is 100 points
Die neun Fensterbilder-Bögen
The nine window picture sheets

The window pictures from Milula Studios present themselves at first glance with an appealing and simple design. The high-quality workmanship indicates a long service life. The high stability of the window pictures ensures that they are securely attached. Unfortunately, there is no information on the sustainability of the product, but the residue-free removal of the stickers suggests that attention was paid to ecological aspects during application.
The simple and attractive design of the window stickers is complemented by high-quality workmanship and high stability . The lack of information on sustainability could be optimized by transparency on the part of the manufacturer, but the residue-free removability leaves a positive impression.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
AssemblyPossible on its own, disassembly is more difficult90 points
LiabilityVery good adhesion, self-adhesive100 points
FunctionalityWindow embellishment, reusable100 points
Areas of applicationVarious rooms, except damp rooms90 points
VariantsDifferent colors and shapes100 points
Total96 points
Weighting: 45%
*The maximum score is 100 points

Installation proved to be user-friendly and could also be carried out alone. The self-adhesive window stickers showed excellent adhesion, which was maintained over the entire test period. A clear advantage is the reusability of the stickers, which confirms the functionality of the product as a window embellishment element.
The versatile application options in different rooms make the window decals flexible to use, although it should be noted that they are not suitable for damp rooms. The availability in different colors and shapes allows the consumer to meet his personal taste and the desired room aesthetics.
In summary, it can be said that the Milula Studios window picture set fulfills the manufacturer’s advertising promises and is therefore a recommended option for decorative window design .

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we examine how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good in the lower price segment90 points
Rating cut4.6 out of 5.0 on Amazon80 points
Total85 points
Weighting: 20%
*The maximum score is 100 points

On the Amazon platform, consumers have given the product an average rating of 4.6 stars. The ease with which the flakes and stars can be attached to the window is highlighted positively, especially by parents who report their children’s enjoyment of the winter decorations. The large selection of motifs and the simple disassembly according to the instructions lead to a clear recommendation to buy.
However, there are a few customer reviews that point out that the adhesion of the stickers does not remain stable over a longer period of time. Another point of criticism is the size of the stickers, which may not be sufficient for larger windows. In our practical tests, we were able to confirm the positive aspects.

Prices of up to €19 are charged on the Internet for equivalent products. Very inexpensive products, on the other hand, are available for as little as €6. This puts Milula Studios’ window pictures in the middle price segment with a current price of €6.99. Consequently, the price ratio is very good for the quality and scope of services you receive.

Overall result

WeightingScore achieved*
1. package contents & instructions20%98 points
2. product processing & appearance20%95 points
3. in the practical test45%96 points
4. price/performance & consumer ratings15%85 points
Total95 points
*The maximum score is 100 points
Window pictures
 of the brand 
Milula Studios
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
02/24
and is stored in our database under the licence number
240105008
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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